Potential insecticidal activity of aminonaphthoquinone Mannich bases derived from lawsone and their copper (II) complex derivatives

• DOI: 10.1515/znc-2020-0115
• Publication Date: 2020-11-03T14:49:02Z
• Authors: Andréia P. Matos; André L. F. Sarria; Ana C. Volante; Antônio R. Bernardo; Gracielle O. S. C...; João B. Fernandes; Paulo C. Vieira; Maria Fátima das ...
• Keywords: Lawsone

The fall armyworm, Spodoptera frugiperda, is a polyphagous pest that causes important damage in different regions of America and mainly affects corn crops both tropical subtropical areas. Currently, control relies on transgenic plants and/or chemical pesticides. In this work, we describe insecticidal activity against the armyworm from series Mannich bases (1-10), derived 2-hydroxy-1,4-naphthoquinone (lawsone), substituted benzaldehydes, two primary amines, their Cu2+ complexes (11-20). [Cu(L)2] were more effective larval mortality compared to free bases. Among tested compounds, complex 11 showed highest toxicity, with 70.00% mortality.